Timing and oscillator circuits
Posted on Feb 5, 2014
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This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of.... -
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is.... -
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to.... -
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This.... -
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the.... -
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,.... -
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the.... -
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power.... -
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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This circuit can be used to remotely monitor a loudspeaker, alarm, or audio source for presence...
This circuit allows you to equlize the audio signals in ten band. It uses low cost op-amps to...
Each stage provides 0° to 180° phase shift. By ganging the two stages, 0° to 360° phase shift is...
This oscillator uses two transistors and operates the crystal in the fundamental mode. CT and C2...
This voltage-to-frequency converter (VFC) accepts the bipolar-ac inputs. For -10- to + 10-V...
When we modulate a carrier signal with amplitude modulation, there will be four frequency...
Tools that created this is to produce noisy atmosphere. This circuit is quite simple, this...
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Installing a water depth OEM sensor that is a solid state, continuous fluid level sensor. The...
This is a circuit for high quality power supply with a continuously variable stabilized output...
The following circuits is one of the power amplifier circuit for FM transmitter with an output...
Here is a very simple circuit that can be used for testing Zener diodes. The IC1 NE555 is wired...
Using the LMD18200 3A H-Bridge designed by National Semiconductors for motion control...
The MIDI Bass Pedal uses the MIDI keyboard encoder (MKE), which is capable of encoding any number...
A voltage comparator is a device that compares the voltage at the two inputs and develops an...
These circuits are similar to that of Fig. 5-47, except that the circuits provide for FM or sweep...
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